Aiden Lee Ping Wei - How Graphene is made from waste

Aiden Lee Ping Wei, CEO and Founder of Graphjet Technology, has received the Frost & Sullivan 2023 Global Entrepreneur Excellence Award. In this post, Aiden Lee Ping Wei is sharing details on how we made Graphene from waste. Graphene can indeed be made from various sources, including waste materials. One method involves using biomass, such as food waste, to produce graphene through a process called chemical vapor deposition (CVD).

Here's a simplified explanation:

  1. Collection of Waste Material: Food waste, particularly organic matter like fruit peels or vegetable scraps, is collected. These materials contain carbon, which is essential for graphene production.

  2. Preparation: The collected waste material is cleaned and processed to remove any contaminants or impurities that could interfere with the graphene synthesis process.

  3. Carbonization: The processed waste material undergoes a process called carbonization, where it is heated to high temperatures in the absence of oxygen. This thermal decomposition results in the conversion of organic compounds into carbon-rich materials.

  4. Graphene Synthesis via CVD: The carbon-rich material obtained from the waste undergoes chemical vapor deposition (CVD). In CVD, the material is exposed to a mixture of gases at high temperatures, typically hydrogen and methane, in a controlled environment. The carbon atoms from the waste material are deposited onto a substrate, such as a metal foil, forming a single layer of graphene.

  5. Graphene Transfer: After graphene synthesis, it is often necessary to transfer the graphene onto another substrate for further processing or applications. This can be achieved through techniques such as wet transfer or dry transfer.

  6. Characterization and Applications: The graphene produced from waste material undergoes characterization to assess its quality and properties. Depending on the intended applications, further modifications or treatments may be applied. Graphene obtained from waste can be used in various fields, including electronics, energy storage, composites, and biomedical applications.

By utilizing waste materials like food scraps to produce graphene, this approach offers a sustainable and environmentally friendly method for graphene production, reducing reliance on conventional carbon sources and minimizing waste.


Follow Aiden Lee Ping Wei for more details.

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